<boily> le/rn \xc3\xb6rjan/\xc3\x96rjan is the di\xc3\xa6resed twin. He will punctuate your v\xc3\xb6\xe1\xba\x85\xc3\xabls, and maybe a few other unsuspecting letters.

#!/bin/sh
find /var/irclogs/_esoteric -mindepth 1 -maxdepth 1 -type f -name '????-??-??.txt' | sort -r | xargs -d'\n' -r tac -- | grep "^..:..:..: <$1>" | head -n 1